Temperature Vs Resistance; Sizing Natural Gas Pipe Mains & Branches - Trane YSC060 Installation Operation & Maintenance

Table 4
Temperature versus Resistance

(temperature vs resistance)

Temperature
Degrees Degrees Nominal
F° C° Resistance
-20° -28.9° 170.1 K - Ohms
-15° -26.1° 143.5 K - Ohms
-10° -23.3° 121.4 K - Ohms
-5° -20.6° 103.0 K - Ohms
0° -17.8° 87.56 K - Ohms
5° -15.0° 74.65 K - Ohms
10° -12.2° 63.80 K - Ohms
15° -9.4° 54.66 K - Ohms
20° -6.7° 46.94 K - Ohms
25° -3.8° 40.40 K - Ohms
30° -1.1° 34.85 K - Ohms
35° 1.7° 30.18 K - Ohms
40° 4.4° 26.22 K - Ohms
45° 7.2° 22.85 K - Ohms
50° 10.0° 19.96 K - Ohms
55° 12.8° 17.47 K - Ohms
60° 15.6° 15.33 K - Ohms
65° 18.3° 13.49 K - Ohms
70° 21.1° 11.89 K - Ohms
75° 23.9° 10.50 K - Ohms
80° 26.7° 9.297 K - Ohms
85° 29.4° 8.247 K - Ohms
90° 32.2° 7.330 K - Ohms
95° 35.0° 6.528 K - Ohms
100° 37.8° 5.824 K - Ohms
Figure 7
Schematic Diagram for Field Gas Piping to Unit
RT-SVX31A-EN
Installation
Table 5
Sizing Natural Gas Pipe Mains & Branches
Length of
Pipe (Ft.)
Capacity of Pipe of Different Diameters and
Lengths in Cu. Ft. Per Hr. with Pressure
Drop of 0.3" and Specific Gravity of 0.60
Length of
Pipe (Meters) Pipe
Capacity of Pipe of Different Diameters and
Lengths in Cu. Meter Per Hr. with Pressure
Drop of 74.6 Pa and Specific Gravity of 0.60
Specific Gravity Multipliers
Specific
Gravity
Figure 8
Typical Unit Gas Train Configuration
Iron Pipe Size (IPS) Inches
1/2" 3/4"
Pipe Pipe
15 76 176
30 52 120
45 43 99
60 38 86
75 77
Iron Pipe Size (SI) Millimeters
15 mm 20 mm 25 mm 32 mm 40 mm
Pipe
4.6 2.15 4.98
9.1 1.47 3.39
13.7 1.21 2.80
18.3 1.07 2.43
22.9 -- 2.18
Multiplier
0.50 1.10
0.55 1.04
0.60 1.00
0.65 0.96
1" 1 1/4" 1 1/2"
Pipe Pipe Pipe
345 750 1220
241 535 850
199 435 700
173 380 610
155 345 545
Pipe Pipe Pipe
9.76 21.23 34.54
6.82 15.14 24.06
5.63 12.31 19.82
4.89 10.76 17.27
4.38 9.76 15.40
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